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/*-
* BSD LICENSE
*
* Copyright(c) 2017 Linaro Limited. All rights reserved.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef __HASH_FUNC_ARM64_H__
#define __HASH_FUNC_ARM64_H__
#define _CRC32CX(crc, val) \
__asm__("crc32cx %w[c], %w[c], %x[v]":[c] "+r" (crc):[v] "r" (val))
static inline uint64_t
hash_crc_key8(void *key, void *mask, __rte_unused uint32_t key_size,
uint64_t seed)
{
uint64_t *k = key;
uint64_t *m = mask;
uint32_t crc0;
crc0 = seed;
_CRC32CX(crc0, k[0] & m[0]);
return crc0;
}
static inline uint64_t
hash_crc_key16(void *key, void *mask, __rte_unused uint32_t key_size,
uint64_t seed)
{
uint64_t *k = key, k0;
uint64_t *m = mask;
uint32_t crc0, crc1;
k0 = k[0] & m[0];
crc0 = k0;
_CRC32CX(crc0, seed);
crc1 = k0 >> 32;
_CRC32CX(crc1, k[1] & m[1]);
crc0 ^= crc1;
return crc0;
}
static inline uint64_t
hash_crc_key24(void *key, void *mask, __rte_unused uint32_t key_size,
uint64_t seed)
{
uint64_t *k = key, k0, k2;
uint64_t *m = mask;
uint32_t crc0, crc1;
k0 = k[0] & m[0];
k2 = k[2] & m[2];
crc0 = k0;
_CRC32CX(crc0, seed);
crc1 = k0 >> 32;
_CRC32CX(crc1, k[1] & m[1]);
_CRC32CX(crc0, k2);
crc0 ^= crc1;
return crc0;
}
static inline uint64_t
hash_crc_key32(void *key, void *mask, __rte_unused uint32_t key_size,
uint64_t seed)
{
uint64_t *k = key, k0, k2;
uint64_t *m = mask;
uint32_t crc0, crc1, crc2, crc3;
k0 = k[0] & m[0];
k2 = k[2] & m[2];
crc0 = k0;
_CRC32CX(crc0, seed);
crc1 = k0 >> 32;
_CRC32CX(crc1, k[1] & m[1]);
crc2 = k2;
_CRC32CX(crc2, k[3] & m[3]);
crc3 = k2 >> 32;
_CRC32CX(crc0, crc1);
_CRC32CX(crc2, crc3);
crc0 ^= crc2;
return crc0;
}
static inline uint64_t
hash_crc_key40(void *key, void *mask, __rte_unused uint32_t key_size,
uint64_t seed)
{
uint64_t *k = key, k0, k2;
uint64_t *m = mask;
uint32_t crc0, crc1, crc2, crc3;
k0 = k[0] & m[0];
k2 = k[2] & m[2];
crc0 = k0;
_CRC32CX(crc0, seed);
crc1 = k0 >> 32;
_CRC32CX(crc1, k[1] & m[1]);
crc2 = k2;
_CRC32CX(crc2, k[3] & m[3]);
crc3 = k2 >> 32;
_CRC32CX(crc3, k[4] & m[4]);
_CRC32CX(crc0, crc1);
_CRC32CX(crc2, crc3);
crc0 ^= crc2;
return crc0;
}
static inline uint64_t
hash_crc_key48(void *key, void *mask, __rte_unused uint32_t key_size,
uint64_t seed)
{
uint64_t *k = key, k0, k2, k5;
uint64_t *m = mask;
uint32_t crc0, crc1, crc2, crc3;
k0 = k[0] & m[0];
k2 = k[2] & m[2];
k5 = k[5] & m[5];
crc0 = k0;
_CRC32CX(crc0, seed);
crc1 = k0 >> 32;
_CRC32CX(crc1, k[1] & m[1]);
crc2 = k2;
_CRC32CX(crc2, k[3] & m[3]);
crc3 = k2 >> 32;
_CRC32CX(crc3, k[4] & m[4]);
_CRC32CX(crc0, ((uint64_t)crc1 << 32) ^ crc2);
_CRC32CX(crc3, k5);
crc0 ^= crc3;
return crc0;
}
static inline uint64_t
hash_crc_key56(void *key, void *mask, __rte_unused uint32_t key_size,
uint64_t seed)
{
uint64_t *k = key, k0, k2, k5;
uint64_t *m = mask;
uint32_t crc0, crc1, crc2, crc3, crc4, crc5;
k0 = k[0] & m[0];
k2 = k[2] & m[2];
k5 = k[5] & m[5];
crc0 = k0;
_CRC32CX(crc0, seed);
crc1 = k0 >> 32;
_CRC32CX(crc1, k[1] & m[1]);
crc2 = k2;
_CRC32CX(crc2, k[3] & m[3]);
crc3 = k2 >> 32;
_CRC32CX(crc3, k[4] & m[4]);
crc4 = k5;
_CRC32CX(crc4, k[6] & m[6]);
crc5 = k5 >> 32;
_CRC32CX(crc0, ((uint64_t)crc1 << 32) ^ crc2);
_CRC32CX(crc3, ((uint64_t)crc4 << 32) ^ crc5);
crc0 ^= crc3;
return crc0;
}
static inline uint64_t
hash_crc_key64(void *key, void *mask, __rte_unused uint32_t key_size,
uint64_t seed)
{
uint64_t *k = key, k0, k2, k5;
uint64_t *m = mask;
uint32_t crc0, crc1, crc2, crc3, crc4, crc5;
k0 = k[0] & m[0];
k2 = k[2] & m[2];
k5 = k[5] & m[5];
crc0 = k0;
_CRC32CX(crc0, seed);
crc1 = k0 >> 32;
_CRC32CX(crc1, k[1] & m[1]);
crc2 = k2;
_CRC32CX(crc2, k[3] & m[3]);
crc3 = k2 >> 32;
_CRC32CX(crc3, k[4] & m[4]);
crc4 = k5;
_CRC32CX(crc4, k[6] & m[6]);
crc5 = k5 >> 32;
_CRC32CX(crc5, k[7] & m[7]);
_CRC32CX(crc0, ((uint64_t)crc1 << 32) ^ crc2);
_CRC32CX(crc3, ((uint64_t)crc4 << 32) ^ crc5);
crc0 ^= crc3;
return crc0;
}
#define hash_default_key8 hash_crc_key8
#define hash_default_key16 hash_crc_key16
#define hash_default_key24 hash_crc_key24
#define hash_default_key32 hash_crc_key32
#define hash_default_key40 hash_crc_key40
#define hash_default_key48 hash_crc_key48
#define hash_default_key56 hash_crc_key56
#define hash_default_key64 hash_crc_key64
#endif
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